UIUC PSYC 230 EXAM 3 NEWEST 2024 NEWEST 2024
ACTUAL EXAM 170 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
ALREADY GRADED A+
Sound stimulus CORRECT ANSWER ✔️ the periodic variations
in air pressure traveling out from the source
Sound waves CORRECT ANSWER ✔️ the waves of pressure
changes that occur in the air as a function of the vibration of a
source
Medium of sound CORRECT ANSWER ✔️ A material (solid,
liquid, or gas, or combination of these) through which a wave
travels. In water, sound travels 4x faster than it does through air.
pure tones CORRECT ANSWER ✔️ A sound wave in which
changes in air pressure follow a sine wave pattern.
amplitude CORRECT ANSWER ✔️ the difference between the
peak and the baseline of a wave (height of wave).
,loudness CORRECT ANSWER ✔️ Perceptual experience of
amplitude
Loud sounds can be dangerous CORRECT ANSWER ✔️
Prolonged contact to sounds over 85 dB can eventually cause
hearing loss. Sounds louder than 120 dB are painful. Sounds
louder than 130 dB will generally result in immediate and
permanent hearing loss.
Frequency CORRECT ANSWER ✔️ The number of cycles in a
sound stimulus that occur in 1 second
Pitch CORRECT ANSWER ✔️ The subjective experience of
frequency
what unit is used to measure sound amplitude? CORRECT
ANSWER ✔️ Hertz (Hz)
What is the hearing range of humans and how does it change
with age? CORRECT ANSWER ✔️ 20-20,000 Hz. As people
age, hearing in the highest range dissipates. Lowest frequencies
tend to remain stable with age.
,Outer ear CORRECT ANSWER ✔️ Pinna, external auditory
canal, tympanic membrane (eardrum)
Pinna CORRECT ANSWER ✔️ Collects sound and funnels it
into the auditory canal
External auditory canal CORRECT ANSWER ✔️ conducts
sound to the tympanic membrane, amplifies specific sound
frequencies.
Tympanic membrane (eardrum) CORRECT ANSWER ✔️ Thin
elastic sheet.
Middle ear CORRECT ANSWER ✔️ -Ossicles: Malleus
(hammer),
Incus (anvil), stapes (stirrup)
-Eustachian tube
-Tensor tympani & Stapedius
, Eustachian tube CORRECT ANSWER ✔️ Connects the middle
ear with the pharynx. Equalizes air pressure on either side of the
eardrum
Tensor tympani and Stapedius CORRECT ANSWER ✔️
Muscles attached to the malleus and stapes
Incus (anvil) CORRECT ANSWER ✔️ The middle bone which is
connected to the malleus and hammer, passes vibrations onto the
stapes.
Ossicles CORRECT ANSWER ✔️ 3 small bones in the middle
ear that conduct sound mechanically, goal is to amplify sounds
Malleus (hammer) CORRECT ANSWER ✔️ Affixed to the
tympanic membrane and acts on the incus
Stapes (stirrups) CORRECT ANSWER ✔️ Vibrates against oval
window creating pressure waves leading to transduction by hair
cells on basilar membrane in cochlea
Inner ear CORRECT ANSWER ✔️ *Cochlea
ACTUAL EXAM 170 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
ALREADY GRADED A+
Sound stimulus CORRECT ANSWER ✔️ the periodic variations
in air pressure traveling out from the source
Sound waves CORRECT ANSWER ✔️ the waves of pressure
changes that occur in the air as a function of the vibration of a
source
Medium of sound CORRECT ANSWER ✔️ A material (solid,
liquid, or gas, or combination of these) through which a wave
travels. In water, sound travels 4x faster than it does through air.
pure tones CORRECT ANSWER ✔️ A sound wave in which
changes in air pressure follow a sine wave pattern.
amplitude CORRECT ANSWER ✔️ the difference between the
peak and the baseline of a wave (height of wave).
,loudness CORRECT ANSWER ✔️ Perceptual experience of
amplitude
Loud sounds can be dangerous CORRECT ANSWER ✔️
Prolonged contact to sounds over 85 dB can eventually cause
hearing loss. Sounds louder than 120 dB are painful. Sounds
louder than 130 dB will generally result in immediate and
permanent hearing loss.
Frequency CORRECT ANSWER ✔️ The number of cycles in a
sound stimulus that occur in 1 second
Pitch CORRECT ANSWER ✔️ The subjective experience of
frequency
what unit is used to measure sound amplitude? CORRECT
ANSWER ✔️ Hertz (Hz)
What is the hearing range of humans and how does it change
with age? CORRECT ANSWER ✔️ 20-20,000 Hz. As people
age, hearing in the highest range dissipates. Lowest frequencies
tend to remain stable with age.
,Outer ear CORRECT ANSWER ✔️ Pinna, external auditory
canal, tympanic membrane (eardrum)
Pinna CORRECT ANSWER ✔️ Collects sound and funnels it
into the auditory canal
External auditory canal CORRECT ANSWER ✔️ conducts
sound to the tympanic membrane, amplifies specific sound
frequencies.
Tympanic membrane (eardrum) CORRECT ANSWER ✔️ Thin
elastic sheet.
Middle ear CORRECT ANSWER ✔️ -Ossicles: Malleus
(hammer),
Incus (anvil), stapes (stirrup)
-Eustachian tube
-Tensor tympani & Stapedius
, Eustachian tube CORRECT ANSWER ✔️ Connects the middle
ear with the pharynx. Equalizes air pressure on either side of the
eardrum
Tensor tympani and Stapedius CORRECT ANSWER ✔️
Muscles attached to the malleus and stapes
Incus (anvil) CORRECT ANSWER ✔️ The middle bone which is
connected to the malleus and hammer, passes vibrations onto the
stapes.
Ossicles CORRECT ANSWER ✔️ 3 small bones in the middle
ear that conduct sound mechanically, goal is to amplify sounds
Malleus (hammer) CORRECT ANSWER ✔️ Affixed to the
tympanic membrane and acts on the incus
Stapes (stirrups) CORRECT ANSWER ✔️ Vibrates against oval
window creating pressure waves leading to transduction by hair
cells on basilar membrane in cochlea
Inner ear CORRECT ANSWER ✔️ *Cochlea
